include/sysemu/os-posix.h

   1 /*
   2  * posix specific declarations
   3  *
   4  * Copyright (c) 2003-2008 Fabrice Bellard
   5  * Copyright (c) 2010 Jes Sorensen <Jes.Sorensen@redhat.com>
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a copy
   8  * of this software and associated documentation files (the "Software"), to deal
   9  * in the Software without restriction, including without limitation the rights
  10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11  * copies of the Software, and to permit persons to whom the Software is
  12  * furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included in
  15  * all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  23  * THE SOFTWARE.
  24  */
  25
  26 #ifndef QEMU_OS_POSIX_H
  27 #define QEMU_OS_POSIX_H
  28
  29 #include <sys/mman.h>
  30 #include <sys/socket.h>
  31 #include <netinet/in.h>
  32 #include <netinet/tcp.h>
  33 #include <arpa/inet.h>
  34 #include <netdb.h>
  35 #include <sys/un.h>
  36
  37 #ifdef CONFIG_SYSMACROS
  38 #include <sys/sysmacros.h>
  39 #endif
  40
  41 void os_set_line_buffering(void);
  42 void os_set_proc_name(const char *s);
  43 void os_setup_signal_handling(void);
  44 void os_daemonize(void);
  45 void os_setup_post(void);
  46 int os_mlock(void);
  47
  48 #define closesocket(s) close(s)
  49 #define ioctlsocket(s, r, v) ioctl(s, r, v)
  50
  51 typedef struct timeval qemu_timeval;
  52 #define qemu_gettimeofday(tp) gettimeofday(tp, NULL)
  53
  54 #ifndef CONFIG_UTIMENSAT
  55 #ifndef UTIME_NOW
  56 # define UTIME_NOW     ((1l << 30) - 1l)
  57 #endif
  58 #ifndef UTIME_OMIT
  59 # define UTIME_OMIT    ((1l << 30) - 2l)
  60 #endif
  61 #endif
  62 typedef struct timespec qemu_timespec;
  63 int qemu_utimens(const char *path, const qemu_timespec *times);
  64
  65 bool is_daemonized(void);
  66
  67 /**
  68  * qemu_alloc_stack:
  69  * @sz: pointer to a size_t holding the requested usable stack size
  70  *
  71  * Allocate memory that can be used as a stack, for instance for
  72  * coroutines. If the memory cannot be allocated, this function
  73  * will abort (like g_malloc()). This function also inserts an
  74  * additional guard page to catch a potential stack overflow.
  75  * Note that the memory required for the guard page and alignment
  76  * and minimal stack size restrictions will increase the value of sz.
  77  *
  78  * The allocated stack must be freed with qemu_free_stack().
  79  *
  80  * Returns: pointer to (the lowest address of) the stack memory.
  81  */
  82 void *qemu_alloc_stack(size_t *sz);
  83
  84 /**
  85  * qemu_free_stack:
  86  * @stack: stack to free
  87  * @sz: size of stack in bytes
  88  *
  89  * Free a stack allocated via qemu_alloc_stack(). Note that sz must
  90  * be exactly the adjusted stack size returned by qemu_alloc_stack.
  91  */
  92 void qemu_free_stack(void *stack, size_t sz);
  93
  94 /* POSIX and Mingw32 differ in the name of the stdio lock functions.  */
  95
  96 static inline void qemu_flockfile(FILE *f)
  97 {
  98     flockfile(f);
  99 }
 100
 101 static inline void qemu_funlockfile(FILE *f)
 102 {
 103     funlockfile(f);
 104 }
 105
 106 #endif